Hangs on the picture of the motherboard (Windows) on a new PC, what are the reasons?

Question

Windows

Hello!
Recently I encountered such a problem, the computer began to load for a very long time, when you turn it on, the logo of the motherboard appears, it hangs for 5 minutes and then it turns on (when the motherboard logo is turned off, it hangs on the Windows logo), while after entering the password there are 4 options to continue,
1. Everything works normal
2. After a few seconds, a black screen (coolers are spinning)
3. If you just sit on the main screen, everything is fine, when you enter the application, a black screen (coolers are spinning)
4. It seems that everything is fine, but when checking wild friezes and the video card gives out 10+~ fps in the furmark on, or when entering YouTube, the video freezes very much, if you take the window (google) with the cursor when moving quickly, there are no lags, friezes, and if you slowly move the window around the desktop, obvious friezes and lags appear
I tried a lot of things from an easy shutdown of usb to re-plugging gpu, ddr, ssd
. The only thing I didn’t remove was the cpu.
All components worked for 7 ~ 8 months, the computer is powerful in relation to time, it always monitored the temperature above 80 did not observe (percent, video card), entering BIOS, safe mode everything goes fine, it happens that after rebooting from safe mode everything is fine, but now when reboot from no.dir to normal, the same picture hangs
Yesterday it was such that in the game when moving to another location (tobish teleport) the picture in the game hung up but the sound continued to work, after that sometimes there was a reboot, I don’t know what else I can try please help if you can.
Accessories :
Rtx 3070
R5 3600 (water cooled)
Ddr4 T force (3200) 2×8
Seasonic gx 750
Asus B550 plus tuf gaming
Wd black sn750 (500gb) plugged in from below, cooling included, with
Wd blue motherboard (500gb) plugged in from above, cooling without cooler (bought and installed recently after the system began to freeze, but then the problem was solved and the computer worked for several weeks)

Answer 1

The only thing I did not remove cpu

- And you remove the GPU and check it first.
This is the first thing to do. Judging by all the ailments, the video flew. Software failures do not give such errors. Remove the discrete, connect to the integrated and test.

bought and installed recently after that the system began to freeze, but then the problem was solved and the computer worked for several weeks

Uncle, well, you know better after what you started having problems. Check this out.